Patent · US Active

Sintered polycrystalline diamond tubular members

US8640768B2 · kind B2 · utility

6Cited by

51References

20Claims

0Family size

Inventors

David R. Hall · Provo, US
Ronald B. Crockett · Payson, US
Neil Cannon · Provo, US

Key dates

Filing date	Jun 21, 2011
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Apr 24, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B21/10
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In one aspect of the present invention, an external tubular member comprises an external outside surface and an external inside surface joined by an external wall thickness. The external wall thickness comprises external sintered polycrystalline diamond. An internal member comprises an internal outside surface and an internal width. The internal width comprises internal sintered polycrystalline diamond. The external inside surface is adjacent to the internal outside surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.